15061121 has 4 divisors (see below), whose sum is σ = 15580500. Its totient is φ = 14541744.

The previous prime is 15061117. The next prime is 15061147. The reversal of 15061121 is 12116051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12116051 = 2777 ⋅4363.

It can be written as a sum of positive squares in 2 ways, for example, as 4243600 + 10817521 = 2060^2 + 3289^2 .

It is a cyclic number.

It is not a de Polignac number, because 15061121 - 2² = 15061117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15061121.

It is not an unprimeable number, because it can be changed into a prime (15061171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259646 + ... + 259703.

It is an arithmetic number, because the mean of its divisors is an integer number (3895125).

Almost surely, 2^15061121 is an apocalyptic number.

It is an amenable number.

15061121 is a deficient number, since it is larger than the sum of its proper divisors (519379).

15061121 is an equidigital number, since it uses as much as digits as its factorization.

15061121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519378.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 15061121 is about 3880.8660116010. The cubic root of 15061121 is about 246.9557253714.

Adding to 15061121 its reverse (12116051), we get a palindrome (27177172).

The spelling of 15061121 in words is "fifteen million, sixty-one thousand, one hundred twenty-one".